https://db.gcve.eu/rss/recent/all/10 Most recent entries from all 2026-10-16T18:56:59.394470+00:00 Vulnerability-Lookup info@gcve.eu python-feedgen Contains only the most 10 recent entries. https://db.gcve.eu/vuln/cve-2021-4140 CVE-2021-4140 2026-10-16T18:57:00.014731+00:00

Affected: Mozilla Firefox ESR, Mozilla Firefox, Mozilla Thunderbird

It was possible to construct specific XSLT markup that would be able to bypass an iframe sandbox. This vulnerability affects Firefox ESR < 91.5, Firefox < 96, and Thunderbird < 91.5.

 https://db.gcve.eu/vuln/usn-5229-1 USN-5229-1 — firefox vulnerabilities 2026-10-16T18:57:00.014888+00:00

Affected: Ubuntu:18.04:LTS: firefox, Ubuntu:20.04:LTS: firefox

Multiple security issues were discovered in Firefox. If a user were tricked into opening a specially crafted website, an attacker could potentially exploit these to cause a denial of service, spoof the browser UI, bypass security restrictions, obtain sensitive information across domains, or execute arbitrary code.